Open the Phone app
Tap the three-dot menu or More
Tap Settings
Tap Wi-Fi Calling
Turn on Wi-Fi Calling
If prompted, enter or confirm your emergency address
If you do not see Wi-Fi Calling, open Settings
Tap Network & Internet or Connections
Tap Mobile Network or SIMs
Tap Wi-Fi Calling
Turn it on
Make sure Wi-Fi is connected
Restart the phone if the option does not appear
Contact your carrier if Wi-Fi Calling is still unavailable